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\bibitem{Zeng_etal2018} Zeng, L., Chassignet, E. P., Schmitt, R. W., Xu, X., \& Wang, D. (2018). Salinification in the South China Sea Since Late 2012: A Reversal of the Freshening Since the 1990s. \textit{Geophys. Res. Lett.}, \textit{45}(6), 2744--2751.

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